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中文摘要：
针对目前带个人信息的广播加密（broadcast encryption with personalized message,BEPM）方案参数过大的问题,综合利用广播加密与密钥封装方法及多线性映射的特性,构造了一种低开销的BEPM方案,其密文长度与用户的私钥长度均为常数,公钥长度仅为O（lb N）.该方案具有完全抗合谋攻击的特性与标准模型下的选择明文安全性,且加解密效率高,可应用于付费电视等诸多领域.
英文摘要：
Current schemes of broadcast encryption with personalized message （BEPV） require exceedingly large parameters. To deal with the problem, a low-overhead BEPM scheme is constructed by comprehensively using broadcast encryption, key encapsulation, and characteristics of multilinear maps. The ciphertext and private key size of each user are constant, and the public key size is only in the order of O（lb N）. The proposed scheme is also fully collusion resistant and can achieve chosen plaintext completely in the standard model. The scheme is safe and effective, and widely applicable in many fields such as pay TV.
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